镍纳米颗粒与含氮碳片复合材料在锂氧气电池中的应用

发布时间：2018-04-26 13:46

本文选题：Ni纳米颗粒 + 含氮碳片　；参考：《中国科技论文》2014年12期

【摘要】：以NiCl2·6H2O为金属源,尿素和柠檬酸分别为N源和C源,采用一种简单的溶胶凝胶法制备出Ni纳米颗粒高度分散在含氮碳片上的复合材料(Ni-C-N)。将该复合材料用作锂氧气电池的正极催化剂,与常用的空气正极材料科琴黑(KB)相比,其表现出更高的电化学催化活性。当使用Ni-C-N作为正极催化剂时,电池的首周放电容量及放电平台均有明显的提高,尤其在电池的循环性方面表现出更加显著的效果,循环可达38周。
[Abstract]:Using NiCl2 6H2O as metal source, urea and citric acid as N and C sources respectively, a simple sol-gel method was used to prepare Ni nanoparticles highly dispersed on nitrogen-containing carbon sheets. The composite material was used as the cathode catalyst for lithium-oxygen batteries and showed higher electrochemical catalytic activity than the conventional air cathode material Kochan black KB. When Ni-C-N was used as the cathode catalyst, the discharge capacity and the discharge platform of the battery increased obviously, especially the cycle performance of the battery was more remarkable, and the cycle could reach 38 weeks.
【作者单位】：南开大学新能源材料化学研究所;
【基金】：高等学校博士学科点专项科研基金资助项目(20120031110008)
【分类号】：TM911.4;TB333

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